Fly-wheel.



N. J. ROTHSTEN.

FLY WHEEL.

APPLIOATION FILED MAY 19, 1913.

1,1 03,843., Patented July 14, 1914.

2 SHEETS-SHEET 1.

I 7 Z @Imwwtoz N. J. ROTHSTEN.

FLY WHEEL.

APPLIOATION FILED MAY 19, 1913.

1 1 03,843. Patented July 14, 19M

2 SHEETS-SHEET 2.

-.J.- s esa J pra n. WISCONSIN.

- fry-wanna ino asaa specifi i :i 'r teim Patented July 14, 1914.

Y imam m May '19, i513. SerialNo.768 ,598.

To all whom it may concemxi .j'jl

.Be it known that I, NELSiJ.'EROTHSTEN, a

citizen of. the United States, residing at B le tym the, coun y; .RQ-andte e o Wisconsin, have invented certain new, and useful Improvementsin Fly-Wheels, of which the following is a specification, referencebeing had therein to the accompanying drawing.

This invention relates to fly wheels and has for its object theproduction of an eflicient fly wheel for regulating the speed. of

an engine, while taking off or putting on a load, therefore producing aneven rotation. Y

Another object of this invention is the production of an eflicientinterlocking means ormed in the hub of the wheel, whereby the spokes maybe automatically swung for overcoming the uneven impulses of an enme. vWith these and other ob ects in v ew, this lnventlon consists of certamnovel constructions, comb1nat1ons and arrangements of parts as will behereinafter fully described and claimed.

In the drawings: Figure v 1 is aside eleva- I tion of the fly wheel.Fig. 2 is an enlarged vertical sectlon through the hub of the wheel.Fig. 3 is a section taken on line 33 of Fig. 1. Fig 4: is a top planview of the hub-portion of the wheel. I Fig. 5 is a section taken online 5.-'5 of Fig. 2. Fig. 6 is a detail perspective of one of therim-sections of the fly wheel. Fig. 7 is a detail perspective of one ofthe interlocking blocks carried by the hub of the wheel. Fig. 8 is asectional view through the joint of two of the interlocking blocks,showing the outer shoulders of the same in a locked engagement Fig. 9 isa section through the joint of two of the interlocking blocks, showingthe inner shoulders thereof in locked engagement.

By referring to the drawing by numerals it will be seen that 1designates the hub of the wheel, which is provided with a channel 2around the periphery thereof. Aplurality' of interlocking blocks 3.arepivotally mounted in the channel2 by means of the support- 2 and 3 ofthe drawinggll g bl ing pins 4, as is clearly illustrated in Figs.

Each of the interloc ocks 3, is provided upon one end with aknob-portion 5, which is substantially semi-circular in shape and at theother'end, with a substantially semi-circular socket 6. The knob of oneblock 3 is. adapted -to-interlock with the socket 1' of the iadj acentblock, thereby connectlng all of the blocks in an endless chain.

.A spoke or arn 7 is carriedbya each .of the blocks 3, and are securelyheld in engagement therewith by means of the pivot pins 4.

The outerends of the spokes or arms 7 carry segmental rim-sections 8,which are secured to the spokes 7 by means of pins 9 which securely holdthe spokes in the apertures 10 formed in the rim-sections, asillustrated in Figs. 3 and 6.

As illustrated in Fig. 2, the knobs 5 fit loosely in the sockets 6 forallowing the arms or spokes to freely swing upon the hub 1.. The swingof the blocks 3 and arms 7,

will be limited however, for the shoulders 11, formednear the outer faceof the blocks 3 adjacent the knobs 5, by engaging the shoulders 12formed adjacent the sockets 6, will limit the swing in one direction andthe lower faces of the blocks 3 will limit the swing in the oppositedirection, when the same are brought into contact with each other.

From the foregoing description, it will be seen that if the fly wheelshould be rotated with sudden impulse, the arms 7 by being looselymounted within the hub will freely swing, thereby causing therim-sections of .each pair of arms to be drawn together therebyequalizing the rotation of the Wheel and overcoming the uneven impulsesof the engine. For the purpose of illustration, at tention is invited toFig. 2 and by carefully considering the arrows placed thereon, therelative swing of the blocks 3 will be obvious.

What is claimed is 1. A fly wheel of the class described comprising ahub, a plurality of blocks pivotally mounted upon said hub, each blockprovided with a spoke receiving socket, 3. spoke carried by each block,a section of a rim carried by each spoke and constituting a balancingweight therefor, each block provided with a projecting knob at one endand a receiving socket at the other end, the socket of each block beingslightly deeper than the knob of the adjacent block adapted to fittherein for allowing the free swinging movement of said blocks andreducing the friction or engagement between said blocks, said. blocksadapted to simultaneously swing under a sudden impulse or rotatlon forequalizing the rotation of said hub.

2. A device of the class described comprising a hub, blocks pivotallycarried thereby, each block provided with a socket at one end, a roundedknob carried by each block, the knob of one block adapted to fit in thesocket of the adjacent block, a spoke carried by each biock, and aweight carried by each spoke adjacent the outer end there of, saidblocks provided with stop sh0u1 ders formed adjacent said sockets andknobs 5 for limiting the swing of said blocks upon 1 said hub, the swingof one block adapted to control the swing of the adjacent blocks forcausing the center of gravity of the weight of said spoke to be shiftedunder a 15 sudden swing of said wheel.

In testimony whereof I' hereunto afiix my signature in presence of twowitnesses.

NELS J. ROTHSTEN.

Witnesses:

S. E. ALLEN, T. R. HARPER.

